summaryrefslogtreecommitdiffstats
path: root/Include/cpython/tupleobject.h
diff options
context:
space:
mode:
authorMichael Droettboom <mdboom@gmail.com>2025-03-27 13:57:06 (GMT)
committerGitHub <noreply@github.com>2025-03-27 13:57:06 (GMT)
commit8614f86b7163b1c39798b481902dbb511292a537 (patch)
tree2bf6a46b432df3d6bf01a4176f3a614a01c48566 /Include/cpython/tupleobject.h
parentcf5e438c0297954c4411c1c3ae4ba67a48b134ea (diff)
downloadcpython-8614f86b7163b1c39798b481902dbb511292a537.zip
cpython-8614f86b7163b1c39798b481902dbb511292a537.tar.gz
cpython-8614f86b7163b1c39798b481902dbb511292a537.tar.bz2
gh-131525: Cache the result of tuple_hash (#131529)
* gh-131525: Cache the result of tuple_hash * Fix debug builds * Add blurb * Fix formatting * Pre-compute empty tuple singleton * Mostly set the cache within tuple_alloc * Fixes for TSAN * Pre-compute empty tuple singleton * Fix for 32-bit platforms * Assert that op != NULL in _PyTuple_RESET_HASH_CACHE * Use FT_ATOMIC_STORE_SSIZE_RELAXED macro * Update Include/internal/pycore_tuple.h Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com> * Fix alignment * atomic load * Update Objects/tupleobject.c Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com> --------- Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com> Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>
Diffstat (limited to 'Include/cpython/tupleobject.h')
-rw-r--r--Include/cpython/tupleobject.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/Include/cpython/tupleobject.h b/Include/cpython/tupleobject.h
index e530c8b..afb98cc 100644
--- a/Include/cpython/tupleobject.h
+++ b/Include/cpython/tupleobject.h
@@ -4,6 +4,8 @@
typedef struct {
PyObject_VAR_HEAD
+ /* Cached hash. Initially set to -1. */
+ Py_hash_t ob_hash;
/* ob_item contains space for 'ob_size' elements.
Items must normally not be NULL, except during construction when
the tuple is not yet visible outside the function that builds it. */